Originally posted by: DJSfurry
i have a 17-40 f/4L, and just borrowed my friends 70-200 f4L. i think id want the 24-105 f/4L IS next for walkaround.. 17-40 on fullframe/film body and the 24-105 on my 30D - only like 1mm of overlap, and great range on with the 1.6x crop